<script setup lang="ts">
import { ref, onMounted } from "vue";
import draggable from "vuedraggable/src/vuedraggable";

let gridLists = ref<Array<Object>>([
  { grid: "cn", num: 1 },
  { grid: "cn", num: 2 },
  { grid: "cn", num: 3 },
  { grid: "cn", num: 4 },
  { grid: "cn", num: 5 },
  { grid: "cn", num: 6 },
  { grid: "cn", num: 7 },
  { grid: "cn", num: 8 },
  { grid: "cn", num: 9 }
]);

let lists = ref<Array<Object>>([
  { people: "cn", id: 1, name: "www.itxst.com" },
  { people: "cn", id: 2, name: "www.baidu.com" },
  { people: "cn", id: 3, name: "www.taobao.com" },
  { people: "cn", id: 4, name: "www.google.com" }
]);

let cutLists = ref([
  { people: "cn", id: 1, name: "cut1" },
  { people: "cn", id: 2, name: "cut2" },
  { people: "cn", id: 3, name: "cut3" },
  { people: "cn", id: 4, name: "cut4" }
]);

const change = (evt): void => {
  console.log("evt: ", evt);
};

onMounted(() => {
  // 使用原生sortable实现元素位置切换
  // @ts-ignore
  // eslint-disable-next-line no-undef
  new Sortable(document.querySelector(".cut-container"), {
    swap: true,
    forceFallback: true,
    chosenClass: "chosen",
    swapClass: "highlight",
    animation: 300
  });
});
</script>

<template>
  <div class="drag-container">
    <!-- grid列表拖拽 -->
    <el-row :gutter="25">
      <el-col :xs="25" :sm="8" :md="8" :lg="8">
        <el-card>
          <template #header>
            <div class="card-header">
              <span>grid列表拖拽</span>
            </div>
          </template>
          <draggable
            v-model="gridLists"
            class="grid-container"
            item-key="grid"
            animation="300"
            chosenClass="chosen"
            forceFallback="true"
          >
            <template #item="{ element }">
              <div :class="'item' + ' ' + 'item-' + element.num">
                {{ element.num }}
              </div>
            </template>
          </draggable>
        </el-card>
      </el-col>

      <el-col :xs="25" :sm="8" :md="8" :lg="8">
        <el-card>
          <template #header>
            <div class="card-header">
              <span>单列拖拽</span>
            </div>
          </template>
          <!-- 单列拖拽 -->
          <draggable
            v-model="lists"
            item-key="name"
            @change="change"
            chosen-class="chosen"
            force-fallback="true"
            animation="300"
          >
            <template #item="{ element, index }">
              <div class="item-single">{{ element.name }} {{ index }}</div>
            </template>
          </draggable>
        </el-card>
      </el-col>

      <el-col :xs="25" :sm="8" :md="8" :lg="8">
        <el-card>
          <template #header>
            <div class="card-header">
              <span>拖拽实现元素位置切换</span>
            </div>
          </template>
          <!-- 拖拽实现元素位置切换 -->
          <div class="cut-container">
            <div
              class="item-cut"
              v-for="(item, index) in cutLists"
              :key="index"
            >
              <p>{{ item.name }}</p>
            </div>
          </div>
        </el-card>
      </el-col>
    </el-row>
  </div>
</template>

<style lang="scss" scoped>
/* grid列表拖拽 */
.grid-container {
  display: grid;
  grid-template-columns: 33.3% 33.3% 33.3%;
  grid-template-rows: 33.3% 33.3% 33.3%;
}

.item-single {
  font-size: 1.5em;
  height: 77px;
  text-align: center;
  line-height: 85px;
  border: 1px solid #e5e4e9;
  cursor: move;
}

.item-cut {
  font-size: 1.5em;
  height: 77px;
  text-align: center;
  border: 1px solid #e5e4e9;
  cursor: move;
}

.item {
  font-size: 2em;
  text-align: center;
  line-height: 100px;
  border: 1px solid #e5e4e9;
  cursor: move;
  @media screen and (max-width: 750px) {
    line-height: 90px;
  }
}

.item-1 {
  background-color: #ef342a;
}

.item-2 {
  background-color: #f68f26;
}

.item-3 {
  background-color: #4ba946;
}

.item-4 {
  background-color: #0376c2;
}

.item-5 {
  background-color: #c077af;
}

.item-6 {
  background-color: #f8d29d;
}

.item-7 {
  background-color: #b5a87f;
}

.item-8 {
  background-color: #d0e4a9;
}

.item-9 {
  background-color: #4dc7ec;
}

.chosen {
  border: solid 2px #3089dc !important;
}
</style>
